Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Rhenium
1. Basic Information
Name: Rhenium
Alias: Rhenium metal
CAS No.: 7440-15-5
Molecular Formula: Re
Molecular Weight: 186.21
Category: Rare refractory metal, catalyst raw material, high-temperature alloy additive, electronic component material, coating material
2. Physical and Chemical Properties
Physical Properties
- Appearance: Silvery-gray metallic powder / solid metal ingot
- Odor: Odorless
- Solubility: Insoluble in water, dilute acids and alkalis; soluble in concentrated nitric acid, hot concentrated sulfuric acid and hydrogen peroxide mixed acid
- Melting Point: 3186 °C
- Boiling Point: 5596 °C
- Density (20 °C): 21.04 g/cm3
- Hygroscopy: Non-hygroscopic under normal atmospheric conditions
- Aqueous property: Inert to neutral cold water at room temperature
Chemical Properties
- Molecular structure: Single-element metallic crystal with hexagonal close-packed lattice structure
- Oxidation resistance: Stable at room temperature in air; oxidizes gradually above 400 °C to form volatile rhenium heptoxide
- Acid-base reactivity: Resists corrosion by most dilute corrosive media; only dissolves in strong oxidizing concentrated acids
- Alloying performance: Easy to form high-temperature resistant alloys with tungsten, molybdenum, nickel and cobalt
- Catalytic activity: Exhibits excellent catalytic performance for hydrogenation, reforming and ammonia synthesis reactions
- Compatibility: Compatible with inert gases and refractory metals; incompatible with strong oxidants, molten alkali and high-temperature oxygen-rich atmosphere
3. Main Application Fields
1. Petroleum Catalyst (Core Application)
Rhenium-platinum bimetallic reforming catalyst for gasoline upgrading in oil refineries
2. High-Temperature Superalloy Additive
Key component for aerospace engine turbine blades, rocket nozzle alloys to improve creep resistance and high-temperature strength
3. Electronic & Semiconductor Materials
Filament material for X-ray tubes, electron emission electrodes, semiconductor thin film coating target
4. Coating & Welding Auxiliary
Anti-corrosion high-temperature coating additive, hard alloy welding flux raw material
5. Chemical Synthesis Catalyst
Special hydrogenation and dehydrogenation catalyst for fine chemical and pharmaceutical synthesis
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 7440-15-5 |
| Molecular Formula | Re |
| Appearance | Uniform silvery-gray metal powder or bright metal ingot without oxidation blackening |
| Metal Purity | Catalyst Grade ≥99.90%, Aerospace Alloy Grade ≥99.99% |
| Particle Size (Powder Type) | Customized mesh from 200 mesh to 5000 mesh |
| Oxygen Content | ≤300 ppm |
| Total Impurity Elements | ≤1000 ppm |
| Heavy Metals (Pb) | ≤5 ppm |
| Packaging | Vacuum-sealed aluminum foil bag filled with inert nitrogen; bulk metal ingot packed in anti-oxidation sealed steel box |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 °C, isolated from oxidizing substances and high-temperature heat sources |
| Transportation Requirement | Inert rare metal material, conventional sealed packaging, avoid collision and open-air exposure |
| Shelf Life | 36 months under full nitrogen vacuum sealed storage |
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